Swansea University's Professor Adrian Luckman, the lead researcher behind the longstanding UK-based Antarctic Project MIDAS research, explained in a statement that his team has been monitoring significant ice shelf changes over the past year. He said,

We have been anticipating this event for months, and have been surprised how long it took for the rift to break through the final few kilometres of ice. We will continue to monitor both the impact of this calving event on the Larsen C Ice Shelf, and the fate of this huge iceberg.

IDK, but "the fate of this huge iceberg" feels daunting coming from a scientist. He continued,

The iceberg is one of the largest recorded and its future progress is difficult to predict. It may remain in one piece but is more likely to break into fragments. Some of the ice may remain in the area for decades, while parts of the iceberg may drift north into warmer waters.

Other similar incidents on the Larsen A and Larsen B shelves caused a rise in sea level, so that could be problematic in the future, too.